Optical Distance Sensor

A highly accurate optical distance sensor is available from Werth Messtechnik, Giessen, Germany. The Werth Chromatic Focus Point sensor can measure dimensional, shape, and positional deviations at high point density. A large measurement range, up to 6 mm, allows for rapid scanning, because the sensor does not need to track along the surface in order to maintain contact. Alternatively, controlled scanning with automatic tracking of the workpiece surface is also possible for severe deviations from the prescribed path. Flatness, warping, and distortion of surfaces can be measured quickly and highly accurately, with probing errors as low as 0.25 μm in the Z direction.

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DC-DC Converter

Featuring an excellent power density of 26 W/in3, an SIP9 packaged, 5-W rated converter from XP Power, Singapore, occupies 65 percent less PCB area than similar products. Its very low 2 μA leakage current makes it ideal for medical BF and CF applications. Approved for worldwide IEC 60601-1 medical applications, the IMM05 features a 2:1 input range, 1500 VAC isolation, and 1 X MOPP at 250 Vrms. The converter operates over a temperature range of –20 to +100 °C, with a full load capability to 60 °C. It draws a low standby current of just 2.5 mA when inhibited, with standard control and protection features including remote on/off, output short circuit, and overload protection.

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Portable Laser Scanner

Hexagon Manufacturing Intelligence, North Kingstown, RI, offers an ultra-large-scale portable laser scanner. The expanded measurement field and point acquisition rate of the LAS-XL means large parts and surfaces can be fully digitized in far less time than ever before. Operating on the same flying-dot scanning technology as the Leica Absolute Scanner LAS, the LAS-XL benefits from a scanline width of up to 600 mm (24 in.) and a measurement stand-off distance of up to a full meter. Accurate to within just 150 μm. the scanner is suitable for applications for which increased measurement speed is extremely valuable.

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Flexible Shafts

S.S. White Technologies, St. Petersburg, FL, offers bespoke flexible shafts for medical applications. Flexible shafts transmit rotary motion much like a solid shaft, but can be curved over, under, and around areas in ways a solid shaft cannot. They are suitable for a variety of medical applications, including in handheld flexible screwdrivers and in flexible drills used in surgery, in laparoscopic and endoscopic surgical equipment, in robotic assisted surgery, and in breast biopsy tools. Custom flexible shafts can be designed for specific applications.

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Cord Sets and Power Cords

Cord sets with polarized and non-polarized NEMA 1-15 plugs and IEC 60320 C17, as well as connectors and power cords with IEC 60320 C17 connectors are now manufactured by Inter-power, Oskaloosa, IA. Black cord sets include polarized NEMA 1-15 plug and straight or angled IEC 60320 C17 connector, polarized NEMA 1-15 plug and angled IEC 60320 C17 connector, or a nonpolarized NEMA 1-15 plug and straight IEC 60320 C17 connector, all on 18 AWG SJT cable. All cords and cord sets are Class II standard AC power supply cords for use in North America.

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EMI Precompliance Analysis

Rigol Technologies, Beaverton, OR, has added an integrated EMI application mode for EMI precompliance measurements to its UltraReal family of real-time spectrum analyzers. The application allows engineers to measure, compare, analyze, and report on EMI issues throughout their design process. Features include integrated CISPR bandwidths and detectors, simple limit line construction, automated multi-segment scan, and up to three simultaneous detectors. Advanced capabilities like real-time detector measurements, automated peak/limit searches, and correction table integration simplify configuring complex test environments and analyzing results.

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Aluminum Etching

Precision Micro, Birmingham, UK, provides photo chemical etching services for consistent, accurate, and repeatable manufacture of precision aluminum components. Using photo-resist and etchants to chemically machine selected areas accurately, the etching process is characterized by retention of material properties, burr-free and stress-free components with clean profiles, and no heat-affected zones. The company focuses on the etchant chemistry itself, temperature control, and the cleaning and preparation of the metal.

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Photo-Etched Parts

Using collaborative robots, or cobots, to improve quality and increase production while reducing cost to customers, Tech-Etch, Plymouth, MA, manufactures precision engineered parts for the medical device industry. The cobots are engineered to work closely and safely with people without physical barriers. Occupying a small footprint on the factory floor, they reduce lead times and perform tasks that are suited for automation. Capabilities include moving delicate photo etched parts into and out of forming tools, heat treating fixtures and into finished packaging, all accomplished with the highest accuracy and repeatability.

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3D Printing PCB Services

Z-Axis, Inc., Phelps, NY, has expanded its 3D printing capabilities at its electronic product design and contract manufacturing center. The company uses its new Formlabs 3D printer to create mold inserts for injection molding and overmolding, prototype enclosures for electronic assemblies, and a variety of fixtures for use in its electronics manufacturing services operations. The stereolithography 3D printer uses a laser to cure solid isotropic parts from a liquid photopolymer resin. It can produce parts with a resolution as fine as 25 μm (0.001 in.), with high material strength and with the ability to withstand high temperatures.

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Medical Design Briefs Magazine

This article first appeared in the June, 2019 issue of Medical Design Briefs Magazine.

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